SE438360B - SINTRATE, SELF-MILLING STOCK - Google Patents

SINTRATE, SELF-MILLING STOCK

Info

Publication number
SE438360B
SE438360B SE7904835A SE7904835A SE438360B SE 438360 B SE438360 B SE 438360B SE 7904835 A SE7904835 A SE 7904835A SE 7904835 A SE7904835 A SE 7904835A SE 438360 B SE438360 B SE 438360B
Authority
SE
Sweden
Prior art keywords
sleeve
permeability
areas
porous material
bearing according
Prior art date
Application number
SE7904835A
Other languages
Swedish (sv)
Other versions
SE7904835L (en
Inventor
G Apuzzo
G F Bocchini
Original Assignee
Merisinter Spa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Merisinter Spa filed Critical Merisinter Spa
Publication of SE7904835L publication Critical patent/SE7904835L/en
Publication of SE438360B publication Critical patent/SE438360B/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/103—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/103—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing
    • F16C33/104—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing in a porous body, e.g. oil impregnated sintered sleeve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/14—Special methods of manufacture; Running-in
    • F16C33/145—Special methods of manufacture; Running-in of sintered porous bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2202/00—Solid materials defined by their properties
    • F16C2202/02—Mechanical properties
    • F16C2202/10—Porosity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/24—Brasses; Bushes; Linings with different areas of the sliding surface consisting of different materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S384/00—Bearings
    • Y10S384/90—Cooling or heating
    • Y10S384/902—Porous member

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Sliding-Contact Bearings (AREA)
  • Powder Metallurgy (AREA)
  • Lubricants (AREA)

Description

ifivèouazsiï 15 i I fig l är en axel l roterbart lagrad i pilens R rikt- ning i en sintrad bussning 2, vilken är fäst i ett säte 3. Be- lastningsriktningen är antydd medelst pilen P medan oljeflödets riktning är antydd med pilar F. I det streckade området H sugs I smörjmedel in i bussningen 2 efter hand som trycket ökar, för att upptagas i bussningens porösa ytlager så att inget smörjme- del alls befinner sig mellan.axeln l och bussningen 2 i det områ- de, där det största trycket råder. I lagret enligt uppfinningen i fig 2 är ett antal ytor 5 med minskad genomtränglighet symme- triskt fördelade på insidan av bussningen 2. Ytorna 5 förhindrar att olja intränger i den porösa massan och bildar i stället en I fortlöpande smörjmedelfilm, mot vilken axeln 1 sluter. In Fig. 1, a shaft 1 is rotatably mounted in the direction of the arrow R in a sintered bushing 2, which is fixed in a seat 3. The direction of loading is indicated by the arrow P while the direction of the oil flow is indicated by arrows F. I the dashed area H is sucked in lubricant into the bushing 2 as the pressure increases, to be absorbed in the porous surface layer of the bushing so that no lubricant is at all between the shaft 1 and the bushing 2 in the area where the greatest pressure advises. In the bearing according to the invention in Fig. 2, a number of surfaces 5 with reduced permeability are symmetrically distributed on the inside of the bushing 2. The surfaces 5 prevent oil from penetrating into the porous mass and instead form a continuous lubricant film, against which the shaft 1 closes.

Antalet tätytor 5 kan variera från l till 2 gånger det nummeriska värdet av håldiametern uttryckt i millimeter i enlig- het med egenskaperna i stort för lagret, t ex I - axelns diameter, I - eventuella förändringar av lastläget, I- eventuella förändringar av rotationsriktningen, - eventuella förändringar av periferihastigheten, - möjligheten att anordna lagret i sätet med fixerat läge i förhållande till lastens verkningsplan, - lagrats väggtjocklek.The number of sealing surfaces 5 can vary from 1 to 2 times the numerical value of the hole diameter expressed in millimeters according to the properties of the bearing in general, eg I - the diameter of the shaft, I - any changes in the load position, I - any changes in the direction of rotation, any changes in the peripheral speed, - the possibility of arranging the bearing in the seat with a fixed position in relation to the plane of action of the load, - the wall thickness of the bearing.

Förhållandet mellan värdet för minskad, lokal genomträng- lighet och värdet för normal lokal genomtränglighet kan variera 5 mellan 0,05 till 0,95.The ratio between the value for reduced, local permeability and the value for normal local permeability can vary between 0.05 to 0.95.

Bestämningen av antalet ytor med minskad genomtränglig- het och av antalet lokala genomträngligheter beror på utfallet av arbetsparametrarna. Det är emellertid alltid möjligt att finna några tillåtna värden för produkten p-V, vilka med åtminstone 3 gånger överstiger de i dag nationellt och internationellt speci- ficerade.The determination of the number of surfaces with reduced permeability and of the number of local permeabilities depends on the outcome of the working parameters. However, it is always possible to find some permissible values for the product p-V, which by at least 3 times exceed those currently nationally and internationally specified.

De sintrade material, vilka är lämpade för tillverkning .av lager av i uppfinningen avsett slag är: I - järn och dess legeringar, - stål av varje legering, inklusive rostfritt stål, - kopparlegeringar, - aluminium, zink och deras respektive legeringar.The sintered materials which are suitable for the manufacture of bearings of the kind intended in the invention are: I - iron and its alloys, - steel of each alloy, including stainless steel, - copper alloys, - aluminum, zinc and their respective alloys.

Tillverkningen skiljer sig icke avsevärt från vad som är vanligt vid pulvermetallurgi och innefattar följande steg: 1 J _..:._._*í_._._-...._._..-._.-__ . ___...__..,. . iimäšdiåsàsëiái - pressning med en lämpligt formad kärna för åstad- kommande av en inre profil hos lagret i steg med en bestämd skillnad i höjd, där stegen omfattar mel- lan 0,01 mm och 2 mm beroende på lagrats geometriska karakteristika och de förväntade arbetsförhållandena, - sintring under de förhållanden som det valda materia- let bestämmer, - kalibrering i en form med ringformiga och cirkulära element, - indränkning i smörjolja vars egenskaper är valda på basis av givna specifikationer om lagrets arbetsför- hållanden.The manufacture does not differ significantly from what is usual in powder metallurgy and includes the following steps: 1 J _ ..: ._._ * í _._._-...._._..-._.-__. ___...__ ..,. . iimäšdiåsàsëiái - pressing with a suitably shaped core to produce an inner profile of the bearing in steps with a definite difference in height, the steps comprising between 0.01 mm and 2 mm depending on the geometric characteristics of the bearing and the expected working conditions, sintering under the conditions determined by the selected material, - calibration in a form with annular and circular elements, - soaking in lubricating oil whose properties are selected on the basis of given specifications on the working conditions of the bearing.

Indränkningen kan utföras även före kalibreringen.Soaking can also be performed before calibration.

Den möjliga måttnoggrannheten är hög och möjliggör upp- fyllandet av toleransklasserna ISO 5 eller ISO 6 eller ISO 7 eller ISO 8 beroende på kraven för alla diametrar.The possible dimensional accuracy is high and enables the compliance of the tolerance classes ISO 5 or ISO 6 or ISO 7 or ISO 8 depending on the requirements for all diameters.

Uppfinningen har beskrivits medelst en lämplig utförings- form men det är uppenbart att fackmannen kan finna varianter även inom uppfinningens ram.The invention has been described by means of a suitable embodiment, but it is obvious that the person skilled in the art can also find variants within the scope of the invention.

Claims (4)

1. 7904835-1 Patentkrag l. Sintrat. självsmörjande lager. bestående av en hylsa (2) av poröst material med förutbestämd genomtränglighet. vilken hylsa med sin inre yta avgränsar en central öppning för upp- tagande av en roterbar axel (1). k ä n n n e t e c k n a t av att den inre ytan innefattar ett flertal relativt tunna om~ råden (5) med mindre genomtränglighet än materialet i hylsan (2). vilka områden (5) är jämnt fördelade i hylsans omkrets- riktning och har sin längsta utsträckning i hylsans längdrikt- ning; varvid områdena (5) med mindre genomtränglighet minskar iinträngningen av smörolja i hylsans (2) porösa material i om- râdet med det högsta trycket. samtidigt som fri cirkulation av olja medges i det porösa materialet i hela hylsan (2).1. 7904835-1 Patent Force l. Sintrat. self-lubricating bearings. consisting of a sleeve (2) of porous material with predetermined permeability. which sleeve with its inner surface defines a central opening for receiving a rotatable shaft (1). characterized in that the inner surface comprises a plurality of relatively thin areas (5) with less permeability than the material in the sleeve (2). which areas (5) are evenly distributed in the circumferential direction of the sleeve and have their longest extent in the longitudinal direction of the sleeve; wherein the areas (5) with less permeability reduce the penetration of lubricating oil into the porous material of the sleeve (2) in the area with the highest pressure. while allowing free circulation of oil in the porous material throughout the sleeve (2). 2. Lager enligt kravet 1. k ä n n e t e c k n a t av att förhållandet mellan genomträngligheten hos områdena (5) med mindre genomtränglighet och genomtränglígheten hos det porösa materialet i hylsan (2) är mellan 0,05 och 0.95. aBearing according to claim 1, characterized in that the ratio between the permeability of the areas (5) with less permeability and the permeability of the porous material in the sleeve (2) is between 0.05 and 0.95. a 3. Lager enligt kravet l eller 2. k ä n n e t e c k n a t av att förhållandet mellan längden hos områdena (5) med mindre genomtränglíghet och den axiella längden hos hylsan (2) är emellan 0.4 och 1. VBearing according to Claim 1 or 2, characterized in that the ratio between the length of the regions (5) with less permeability and the axial length of the sleeve (2) is between 0.4 and 1. V 4. Lager enligt något av kraven l-3. k ä n n e t e c k - *n a t av att antalet områden (5) med mindre genomtränglighet är mellan l och 2 gånger det numeriska värdet av hylsans (2) innerdiameter i millimeter,Bearing according to one of Claims 1 to 3. characterized in that the number of areas (5) with less permeability is between 1 and 2 times the numerical value of the inner diameter of the sleeve (2) in millimeters,
SE7904835A 1978-06-06 1979-06-01 SINTRATE, SELF-MILLING STOCK SE438360B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT49737/78A IT1105328B (en) 1978-06-06 1978-06-06 IMPROVEMENT IN SINTERED SELF-LUBRICATING BEARINGS

Publications (2)

Publication Number Publication Date
SE7904835L SE7904835L (en) 1979-12-07
SE438360B true SE438360B (en) 1985-04-15

Family

ID=11271456

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7904835A SE438360B (en) 1978-06-06 1979-06-01 SINTRATE, SELF-MILLING STOCK

Country Status (19)

Country Link
US (1) US4290655A (en)
JP (1) JPS54159544A (en)
AR (1) AR220943A1 (en)
BE (1) BE876775A (en)
BR (1) BR7903505A (en)
CA (1) CA1117578A (en)
CH (1) CH634390A5 (en)
DE (1) DE2920552C2 (en)
DK (1) DK233779A (en)
ES (1) ES480790A1 (en)
FR (1) FR2428173B1 (en)
GB (1) GB2022722B (en)
IL (1) IL57330A (en)
IN (1) IN152136B (en)
IT (1) IT1105328B (en)
NL (1) NL7903981A (en)
PT (1) PT69735A (en)
SE (1) SE438360B (en)
ZA (1) ZA792526B (en)

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FR2486179A1 (en) * 1980-07-07 1982-01-08 Jeumont Schneider HYDROSTATIC BEARING WITH ROTATING SLEEVE
JPS5986714A (en) * 1982-11-08 1984-05-19 Taiho Kogyo Co Ltd Sliding member
US4756246A (en) * 1987-10-13 1988-07-12 International Business Machines Corporation Lubrication system for print hammer pivot pin
JPH02271106A (en) * 1989-04-10 1990-11-06 Hitachi Ltd Sliding bearing device
JPH03107612A (en) * 1989-09-20 1991-05-08 Sankyo Seiki Mfg Co Ltd Oil-impregnated sintered bearing
JPH03209019A (en) * 1989-10-24 1991-09-12 Sankyo Seiki Mfg Co Ltd Oil-impregnated sintered bearing
JPH0395812U (en) * 1990-01-23 1991-09-30
JP2634003B2 (en) * 1991-07-18 1997-07-23 株式会社三協精機製作所 Manufacturing method of sintered oil-impregnated bearing
DE59300143D1 (en) * 1993-09-30 1995-06-14 Siemens Ag Process for improving the running-in behavior of drives with sintered bearings.
WO2002040880A1 (en) * 2000-11-14 2002-05-23 Mitsubishi Materials Corporation Sintered oil-retaining bearing and production method therefor
DE10107486B4 (en) * 2001-02-15 2008-05-08 Robert Bosch Gmbh Sintered bearing unit
TW524287U (en) * 2002-05-30 2003-03-11 Hon Hai Prec Ind Co Ltd The combined bearing
PL1601530T3 (en) * 2003-03-10 2012-10-31 Wood Engineering Tech Limited Laminates related to the value extraction from harvested trees
DE10312873A1 (en) * 2003-03-22 2004-10-07 Gkn Sinter Metals Gmbh Sintered plain bearing with continuous variation of the bore compression
DE102004012757A1 (en) * 2004-03-15 2005-10-06 Robert Bosch Gmbh bearings
CN101358622A (en) * 2007-08-03 2009-02-04 富准精密工业(深圳)有限公司 Oilless bearing and radiator fan using the oilless bearing
JP4812863B2 (en) * 2009-09-01 2011-11-09 トヨタ自動車株式会社 Shaft support structure for shaft members
CN103557232B (en) * 2013-10-22 2015-09-09 申科滑动轴承股份有限公司 A kind of improve water lubriucated bearing bearing capacity method and corresponding water lubriucated bearing
JP6568578B2 (en) * 2015-12-25 2019-08-28 三菱マテリアル株式会社 Sintered oil-impregnated bearing and manufacturing method thereof
CA2987167A1 (en) * 2016-12-16 2018-06-16 General Electric Company Joint-less continuous journal bearings
JP1610197S (en) 2017-09-25 2018-07-30

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US2227307A (en) * 1939-03-02 1940-12-31 Gen Motors Corp Bearing structure
DE897778C (en) * 1942-08-09 1953-11-23 Hanns Dipl-Ing Voglgsang Porous, oil-containing lager
US2698774A (en) * 1952-06-21 1955-01-04 Michigan Powdered Metal Produc Oil-regulating powdered metal bearing
US2894792A (en) * 1954-02-23 1959-07-14 Schwarzkopf Dev Co Porous lubricant-impregnated bearings
US3110085A (en) * 1957-12-11 1963-11-12 Gen Electric Method of making self-lubricating bearings
US3046068A (en) * 1957-12-11 1962-07-24 Gen Electric Self-lubricating bearings
US3140131A (en) * 1958-11-28 1964-07-07 Tann David Self-lubricating bearing
FR1377414A (en) * 1963-09-13 1964-11-06 Metallurgie Francaise Self-lubricating bush
NL6504516A (en) * 1964-07-31 1966-02-01
DE1575551A1 (en) * 1966-08-24 1970-01-02 Metafram La Metallurg Francais Self-lubricating bearing bush
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US3445148A (en) * 1967-06-08 1969-05-20 Rotron Inc Method of making porous bearings and products thereof

Also Published As

Publication number Publication date
PT69735A (en) 1979-07-01
IN152136B (en) 1983-10-22
DE2920552A1 (en) 1979-12-20
US4290655A (en) 1981-09-22
GB2022722B (en) 1983-02-09
DK233779A (en) 1979-12-07
DE2920552C2 (en) 1985-07-11
AR220943A1 (en) 1980-12-15
CH634390A5 (en) 1983-01-31
FR2428173A1 (en) 1980-01-04
ES480790A1 (en) 1980-01-16
IL57330A0 (en) 1979-09-30
CA1117578A (en) 1982-02-02
IT7849737A0 (en) 1978-06-06
FR2428173B1 (en) 1985-11-15
JPS54159544A (en) 1979-12-17
SE7904835L (en) 1979-12-07
IL57330A (en) 1981-12-31
NL7903981A (en) 1979-12-10
ZA792526B (en) 1980-08-27
BR7903505A (en) 1980-01-22
IT1105328B (en) 1985-10-28
BE876775A (en) 1979-10-01
GB2022722A (en) 1979-12-19

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